| Bug ID | 98988 |
|---|---|
| Summary | [Regression, bisected] New BONAIRE UVD firmware causes DPM problems and extremely slow performance |
| Product | DRI |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/Radeon |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | falaca@gmail.com |
Created attachment 128327 [details] Kernel bisect log I have a 2GB Radeon R7 260X (BONAIRE). With kernel 4.7 and above, I was experiencing extremely slow performance. Even desktop animations on Ubuntu 16.04 w/ Unity desktop are extremely choppy, probably about 10fps. dmesg produces several instances of the following error message: [drm:ci_dpm_set_power_state [radeon]] *ERROR* ci_upload_dpm_level_enable_mask failed I did a kernel bisect, and narrowed the problem to the following commit: http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=7050c6ef5f0e9bc5e6bf9eb035320b70f731b919 The bisect log is attached. It seems that the commit adds support for a new firmware file, "bonaire_uvd.bin". If the driver fails in loading the new firmware file, it falls back to the legacy file, "BONAIRE_uvd.bin". To confirm that the issue is caused by the new firmware, I deleted bonaire_uvd.bin, and performance is restored to normal with the latest stable kernel (4.9.0-rc7). For what it's worth, here are the contents of /sys/kernel/debug/dri/64/radeon_pm_info while idling on the Ubuntu desktop with the new firmware: uvd disabled vce disabled power level avg sclk: 115774 mclk: 15000 And the old firmware: uvd disabled vce disabled power level avg sclk: 30248 mclk: 165000
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